As similar fossils turned up, Mosasaurus turned out to be just the first genus of a whole group of marine reptiles—the mosasaurs. More recently, the seagoing reptile has received the Hollywood ...

Nick Longrich at the University of Bath, UK, and his colleagues analysed the find and classified it as a new species of mosasaur named Xenodens calminechariin 2021. Read more Largest ever animal ...

KAINAN, Wakayama Prefecture--A mosasaur fossil found in the mountains in the prefecture almost two decades ago has been determined to be a new genus and species that lived more than 70 million ...